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Comparative Pathogenesis of Generalist AcMNPV and Specific RanuNPV in Larvae of Rachiplusia nu (Lepidoptera: Noctuidae) Following Single and Mixed Inoculations

The South American soybean pest, Rachiplusia nu (Guenée), is naturally infected by Autographa californica multiple nucleopolyhedrovirus (AcMNPV) and Rachiplusia nu nucleopolyhedrovirus (RanuNPV). We compared their pathogenicity to fourth-instar R. nu larvae, by evaluating time to death and virus spr... Full description

Journal Title: Journal of economic entomology 2021, Vol.114 (2), p.1009-1014
Main Author: Decker-Franco, Cecilia
Other Authors: Taibo, Catalina B , Di Rienzo, Julio A , Alfonso, Victoria , Arneodo, Joel D
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: England: Entomological Society of America
ID: ISSN: 0022-0493
Link: https://www.ncbi.nlm.nih.gov/pubmed/33604661
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title: Comparative Pathogenesis of Generalist AcMNPV and Specific RanuNPV in Larvae of Rachiplusia nu (Lepidoptera: Noctuidae) Following Single and Mixed Inoculations
format: Article
creator:
  • Decker-Franco, Cecilia
  • Taibo, Catalina B
  • Di Rienzo, Julio A
  • Alfonso, Victoria
  • Arneodo, Joel D
subjects:
  • Biological control
  • Development and progression
  • Health aspects
  • Histochemistry
  • Infection
  • mixed infections
  • pathogenesis
  • Pests
  • Rachiplusia nu
  • Rachiplusia nu nucleopolyhedrovirus
  • SHORT COMMUNICATION
  • Soybean
  • viral insecticide
ispartof: Journal of economic entomology, 2021, Vol.114 (2), p.1009-1014
description: The South American soybean pest, Rachiplusia nu (Guenée), is naturally infected by Autographa californica multiple nucleopolyhedrovirus (AcMNPV) and Rachiplusia nu nucleopolyhedrovirus (RanuNPV). We compared their pathogenicity to fourth-instar R. nu larvae, by evaluating time to death and virus spread throughout the tissues in single and mixed infections. Bioassays showed that generalist AcMNPV had a faster speed of kill than specific RanuNPV, while the mixed-virus treatment did not statistically differ from AcMNPV alone. Histopathology evidenced similar tissue tropism for both viruses, but co-inoculation resulted in mostly AcMNPV-infected cells. In sequential inoculations, however, the first virus administered predominated over the second one. Implications on baculovirus interactions and biocontrol potential are discussed. Graphical Abstract
language: eng
source:
identifier: ISSN: 0022-0493
fulltext: no_fulltext
issn:
  • 0022-0493
  • 1938-291X
url: Link


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titleComparative Pathogenesis of Generalist AcMNPV and Specific RanuNPV in Larvae of Rachiplusia nu (Lepidoptera: Noctuidae) Following Single and Mixed Inoculations
creatorDecker-Franco, Cecilia ; Taibo, Catalina B ; Di Rienzo, Julio A ; Alfonso, Victoria ; Arneodo, Joel D
contributorShelby, Kent
creatorcontribDecker-Franco, Cecilia ; Taibo, Catalina B ; Di Rienzo, Julio A ; Alfonso, Victoria ; Arneodo, Joel D ; Shelby, Kent
descriptionThe South American soybean pest, Rachiplusia nu (Guenée), is naturally infected by Autographa californica multiple nucleopolyhedrovirus (AcMNPV) and Rachiplusia nu nucleopolyhedrovirus (RanuNPV). We compared their pathogenicity to fourth-instar R. nu larvae, by evaluating time to death and virus spread throughout the tissues in single and mixed infections. Bioassays showed that generalist AcMNPV had a faster speed of kill than specific RanuNPV, while the mixed-virus treatment did not statistically differ from AcMNPV alone. Histopathology evidenced similar tissue tropism for both viruses, but co-inoculation resulted in mostly AcMNPV-infected cells. In sequential inoculations, however, the first virus administered predominated over the second one. Implications on baculovirus interactions and biocontrol potential are discussed. Graphical Abstract
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languageeng
publisherEngland: Entomological Society of America
subjectBiological control ; Development and progression ; Health aspects ; Histochemistry ; Infection ; mixed infections ; pathogenesis ; Pests ; Rachiplusia nu ; Rachiplusia nu nucleopolyhedrovirus ; SHORT COMMUNICATION ; Soybean ; viral insecticide
ispartofJournal of economic entomology, 2021, Vol.114 (2), p.1009-1014
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0The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. journals.permissions@oup.com
1The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
2COPYRIGHT 2021 Oxford University Press
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descriptionThe South American soybean pest, Rachiplusia nu (Guenée), is naturally infected by Autographa californica multiple nucleopolyhedrovirus (AcMNPV) and Rachiplusia nu nucleopolyhedrovirus (RanuNPV). We compared their pathogenicity to fourth-instar R. nu larvae, by evaluating time to death and virus spread throughout the tissues in single and mixed infections. Bioassays showed that generalist AcMNPV had a faster speed of kill than specific RanuNPV, while the mixed-virus treatment did not statistically differ from AcMNPV alone. Histopathology evidenced similar tissue tropism for both viruses, but co-inoculation resulted in mostly AcMNPV-infected cells. In sequential inoculations, however, the first virus administered predominated over the second one. Implications on baculovirus interactions and biocontrol potential are discussed. Graphical Abstract
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titleComparative Pathogenesis of Generalist AcMNPV and Specific RanuNPV in Larvae of Rachiplusia nu (Lepidoptera: Noctuidae) Following Single and Mixed Inoculations
authorDecker-Franco, Cecilia ; Taibo, Catalina B ; Di Rienzo, Julio A ; Alfonso, Victoria ; Arneodo, Joel D
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abstractThe South American soybean pest, Rachiplusia nu (Guenée), is naturally infected by Autographa californica multiple nucleopolyhedrovirus (AcMNPV) and Rachiplusia nu nucleopolyhedrovirus (RanuNPV). We compared their pathogenicity to fourth-instar R. nu larvae, by evaluating time to death and virus spread throughout the tissues in single and mixed infections. Bioassays showed that generalist AcMNPV had a faster speed of kill than specific RanuNPV, while the mixed-virus treatment did not statistically differ from AcMNPV alone. Histopathology evidenced similar tissue tropism for both viruses, but co-inoculation resulted in mostly AcMNPV-infected cells. In sequential inoculations, however, the first virus administered predominated over the second one. Implications on baculovirus interactions and biocontrol potential are discussed. Graphical Abstract
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